I'm not a fan of flying to start with. But more so I am concerned about our daughter and the mask situation (yes I know wdw just changed their policy) and I am nervous in a stressful situation she is going to fight the mask. If we get kicked off a flight we're screwed and will lose out on a day where if we drive...well....can't kick us out of our car right?
It's all about you and your family's comfort levels, and tolerance for time in the car together.
Our family long ago found out that we prefer a slower pace for road trips; we plan for about 400 miles per day, and we don't like to drive either before sunrise, or after sunset, and we like to have time in our schedule to stop if something catches our eye. We take leisurely lunches on the road, and tend to roll out of the hotel no earlier than 9 am, only because we hate fighting someone else's rush hour almost as much as rush hour at home!
That's my family. I know folks who would literally rotate drivers all day and night, stopping only for food, gas and/or potty - and if they got a jackpot, all 3 at once LOL - and then arrive at Disney, and if you didn't take your chance to sleep in the car? Too bad for you, because we are going on to have all the funs! Personally, I don't like that commando-style touring in any way, shape, or form, and while I could see it for an emergency (we have to get cross country because X has happened, and we can't get flights) that's not how I want to spend my vacation!
Now... I had to miss my September trip *last* year, bc pandemic (I have multiple health issues, so if/when I am cleared to travel again, I will most likely be *that* person who is still wearing a mask, regardless) and I had to miss my beloved January trip *this* year because I had emergency surgery. So... If you told me right now that I could go to Disney World, and all I had to do was get in the car and drive? There would be a mamabunny-shaped hole in the front door where I skee-daddled right into the car and was gone! LOL 1201 miles one way? No Biggie Deal LOL